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#1d55ff

a balanced, electric blue · warm · closest name: royalblue

RGB
29, 85, 255
HSL
225°, 100%, 56%
CMYK
89, 67, 0, 0
Luminance
0.1398

Every format

HEX#1d55ff
RGBrgb(29, 85, 255)
HSLhsl(225, 100%, 56%)
CMYKcmyk(89%, 67%, 0%, 0%)
LABlab(44.2 46.6 -88.1)
LCHlch(44.2 99.6 297.9)
OKLCHoklch(0.537 0.257 264.5)

Copy-ready code

/* CSS */
color: #1d55ff;
background-color: #1d55ff;
/* Tailwind (arbitrary) */
class="text-[#1d55ff] bg-[#1d55ff]"
/* SCSS */
$brand: #1d55ff;
/* SwiftUI */
Color(red: 0.114, green: 0.333, blue: 1.000)
/* Android */
Color.parseColor("#1d55ff")

Accessibility — WCAG contrast

Aa
#1d55ff on white: 5.53:1
AA ✓ pass · AA-large · AAA
Aa
#1d55ff on black: 3.80:1
AA ✗ fail · AA-large · AAA
true color
protanopia
deuteranopia
tritanopia

RGB percentages

Red11.4%
Green33.3%
Blue100.0%

CMYK percentages

Cyan88.6%
Magenta66.7%
Yellow0.0%
Key (black)0.0%

Color previews

#1d55ff text on a black background

contrast 3.80:1

Card sample

#1d55ff text on a white background

contrast 5.53:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

color: #1d55ff;
Background color
Panel with #1d55ff background
background-color: #1d55ff;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #1d55ff;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(29, 85, 255, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(29, 85, 255, 0.45);
Border & gradient
Gradient panel
border: 3px solid #1d55ff;
background: linear-gradient(135deg, #1d55ff, #7C1DFF);

Monochromatic scale

Palettes built from #1d55ff

Shades — darker

Tints — lighter

Hue & tone neighbors

Color harmonies

Nearest named colors

Work with #1d55ff in the Color Lab